So we know that the number x is multiplied by 2 and subtracted by 8 to get the total number of cookies that Gina baked. Lets set up this equation.
48 = 2x - 8
The 2x is our x multiplied by 2 and the - 8 is the 8 less.
Lets solve:
48 = 2x - 8
Add 8 to both sides to isolate the x variable:
48 + 8 = 2x - 8 + 8
56 = 2x
Now we divide the 2 from the 2x in order to fully isolate the variable:
56 = 2x
28 = x
Lets plug 28 in to double check the answer:
48 = 2(28) - 8
48 = 56 - 8
48 = 48
Yes!
I hope this helps! :)